It is a legacy file intended for deployment in regions requiring non-encrypted voice platforms or for specific compliance scenarios, designed to run on Cisco UCS hardware or virtualized environments.
: By default, Cisco provides "UCSInstall" ISOs as non-bootable upgrade files. They are intended to be used through the CUCM OS Administration interface for an existing system upgrade rather than a fresh installation. Bootable UCSInstall UCOS UNRST 8.6.2.10000-14.sgn.iso
: The ".sgn" indicates a signed ISO file, ensuring the integrity and authenticity of the software from Cisco. Key Features of UCOS 8.6.2 It is a legacy file intended for deployment
Technical reports and community guides highlight that these images can be modified to become bootable for use in virtualization environments like KVM, Proxmox, or VirtualBox. : The "
Depending on whether you are installing on a physical server (UCS) or a Virtual Machine (VM): : Simply upload the modified ISO to your ESXi datastore.
Post-install validation